Oliver Lenz
Scientific Researcher Data Scientist
Leiden, South Holland, Netherlands
Summary
🤩
Rockstar🎓
Top SchoolOliver Lenz is a data scientist and scientific researcher with nine years of experience applying machine learning, anomaly detection, and statistical methods across academic and public health settings. Currently at RIVM after postdoctoral work at Leiden and Ghent, he blends rigorous research—culminating in a PhD focused on instance-based learning and one-class classification—with production-oriented engineering. He co-founded a machine learning startup and has hands-on experience building high-performance SQL solutions that uncovered tens of millions in healthcare savings, showing a rare mix of research depth and pragmatic impact. An active open-source contributor, he has improved the Pelican static site generator by refactoring core backend logic and enhancing importers and pagination control. Trained in both linguistics (cum laude) and algebra/number theory, Oliver brings a multidisciplinary perspective that helps him craft elegant, interpretable solutions for complex data problems. Colleagues rely on him for thoughtful problem decomposition, reproducible analysis, and bridging the gap between prototype models and operational use.
9 years of coding experience
7 years of employment as a software developer
Master of Science (MSc), Algebra and Number Theory, Master of Science (MSc), Algebra and Number Theory at Università degli Studi di PadovaSecondary education, Secondary education at Christelijk Gymnasium SorghvlietMaster of Arts (MA), Linguistics, cum laude, Master of Arts (MA), Linguistics, cum laude at Universiteit Leiden
English, Norwegian, Dutch, German, Italian, French, Hindi
Github Skills (9)
pelican10
static-site-generation10
refactoring10
python10
content-management9
content-management-system9
markdown-it8
markdown8
rest8
Programming languages (14)
Github contributions (5)
getpelican/pelican
Mar 2018 - Oct 2019
Static site generator that supports Markdown and reST syntax. Powered by Python.
Role in this project:
Backend Developer
Backend DeveloperContributions:2 reviews, 22 commits, 25 PRs in 1 year 6 months
Contributions summary:Oliver primarily focused on refactoring and improving the codebase of the Pelican static site generator. Their contributions included removing hardcoded sorting within various content generators, enhancing contribution guidelines, and enabling draft status for pages. They also implemented a blogger importer, updated file links for the WordPress importer, and controlled pagination per template by adjusting existing code.
pythonstatic-sitesite-generatorrestpelican
oulenz/fuzzy-rough-learn
Jul 2019 - Nov 2022
A library of fuzzy rough machine learning algorithms
Contributions:5 releases, 5 reviews, 117 commits in 3 years 5 months
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